Research

Broadly, I am interested in how human-caused changes to the environment influence aquatic ecosystem processes, aquatic habitat, and fish population success. My research is focused on coastal and estuarine fishes because they are of economic and social importance and because their habitat is highly vulnerable to anthropogenic impacts. I believe my research should support development of a workable practice of sustainable, ecosystem-based management.

My areas of expertise including using natural tracers, particularly stable isotopes, to study aquatic food web dynamics and fish movements; developing tools and designs for coastal ecosystem condition and biodiversity assessment; and using hydroacoustics to study fisheries and fish habitat.

Currently, my research is focused on two areas Ð ecosystem services (particularly as they relate to fisheries) of coastal ecosystem restoration and aquatic invasive species early detection.

Trebitz, A.S., and J.C. Hoffman. 2015. Coastal wetland support of Great Lakes fisheries: progress from concept to quantification. Transactions of the American Fisheries Society 144(2): 352-372, DOI: 10.1080/00028487.2014.982257

Negus, M.T., and J.C. Hoffman. 2013. Habitat and diet differentiation by two strains of rainbow trout in Lake Superior based on archival tags, stable isotopes, and bioenergetics. Journal of Great Lakes Research 39:578-590. DOI: 10.1016/j.jglr.2013.09.012

Trebitz, A.S., C.W. West, J.C. Hoffman, J.R. Kelly, G.S. Peterson, and I.A. Grigorovich. 2010. Status of non-indigenous benthic invertebrates in the Duluth-Superior Harbor and the role of sampling methods in their detection. Journal of Great Lakes Research 36:747-756.